This a report about real production experiment using both Linux
software RAID and a Mylex hardware RAID controler (real production
tend to be even harder than tests, even on a lower load, since
more special situations append).
My production server has:
2 x 8GB linux software RAID 1, Buslogic
Date: Sun, 13 Aug 2000 17:35:22 +0200
From: Hubert Tonneau [EMAIL PROTECTED]
This a report about real production experiment using both Linux
software RAID and a Mylex hardware RAID controler (real production
tend to be even harder than tests, even on a lower load, since
more
(knock on wood). If software RAID could gracefully
handle hot plugging dead drives (adding a spare without any human
intervention), I'd probably dispense with hardware RAID completely.
Cheers,
Chris
--
Christopher Mauritz
[EMAIL PROTECTED]
Leonard N. Zubkoff wrote:
Generally, the Mylex PCI RAID controllers take disks offline when certain types
of unrecoverable errors occur. The driver will log the reason for any disk
being killed as a console message. Without further information as to precisely
why the disks were taken
Date: Sun, 13 Aug 2000 19:03:27 +0200
From: Hubert Tonneau [EMAIL PROTECTED]
I removed the Mylex controler, and since it's a production server,
I cannot do experiments on this one, so I cannot get any more informations
(I'm sorry about that because I find very important to spend some
Hello all,
when I buy an ide hardware raid card, and I want run it on
linux, I need linux driver to use it?
On Sat, 1 Jul 2000, Michael Ghens wrote:
Just need to know how hard it is to move from software to hardware
raid. Would I have to reformat the HD's? Any special considerations?
Almost certainly, you will need to move the data elsewhere, let the raid
card do its thing with the disks, partition
Just need to know how hard it is to move from software to hardware
raid. Would I have to reformat the HD's? Any special considerations?
with 1Mb of free space. I know now that I can't
make a raid device
as Hardware raid but can I do it with software raid ?? Can I do this
at a RH 6.2 Instalation ??
Thank's again,
Gregory Leblanc wrote:
Adaptec does not have any hardware RAID cards (at least none that are called
adaptec cards
Hi,
Does this means that I can't use Hardware Raid 5 on linux (redhat 6.2)
or this
means that I can't use Raid 5 on linux ? (I have a adaptec aaa7869)
Can I
use raid 5 on linux made by software ???
Thank's again,
Gregory Leblanc wrote:
Adaptec does not have any hardware RAID cards
-Original Message-
From: Gustavo Aguiar [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, June 20, 2000 10:17 AM
To: Gregory Leblanc; linux-raid
Subject: Re: Hardware Raid 5
Hi,
Does this means that I can't use Hardware Raid 5 on linux
(redhat 6.2) or this
means that I can't use
Hi All,
I'm having a big problem trying to install a RedHat 6.2 with a raid 5
made by hardware. A found
at the net som doc's that says that after mounting my Array (3 system
disks seagate of 18G
and 1 spare), I initialize my installation and I don't have a single
disk to make the installation.
al Message-
From: Listas [mailto:[EMAIL PROTECTED]]
Sent: Monday, June 19, 2000 12:25 PM
To: linux-raid
Subject: Hardware Raid 5
Hi All,
I'm having a big problem trying to install a RedHat 6.2 with a raid 5
made by hardware. A found
at the net som doc's that says that after mountin
-Original Message-
From: Frank Joerdens [mailto:[EMAIL PROTECTED]]
Sent: Monday, March 13, 2000 9:02 AM
To: Chris Mauritz
Subject: Re: IDE hardware RAID
On Mon, Mar 13, 2000 at 08:40:57AM -0500, Chris Mauritz wrote:
I'm going to start using them for applications where
On Mon, Mar 13, 2000 at 08:40:57AM -0500, Chris Mauritz wrote:
I'm going to start using them for applications where the data is expendible
(mp3 jukebox comes to mind) where I just want a cheap RAID 0 array to hold a
big chunk of bits. Another good application might be large web farms where
Has anyone played with the FastTrak66 Ultra ATA/66 RAID Card (info at
http://www.promise.com/Products/ideraid/ft66page.htm)? Is anyone working
on a driver for Linux (I've seen that the FreeBSD people are at it)? I think the idea
of having IDE HW RAID is pretty cool. They even provide an IDE
At 12:00 13.03.00, Frank Joerdens wrote:
Has anyone played with the FastTrak66 Ultra ATA/66 RAID Card (info at
http://www.promise.com/Products/ideraid/ft66page.htm)? Is anyone working
on a driver for Linux (I've seen that the FreeBSD people are at it)? I
think the idea
of having IDE HW RAID is
database box, but the economics are quite compelling
in certain situations.
Cheers,
Chris
- Original Message -
From: "Martin Bene" [EMAIL PROTECTED]
To: "Frank Joerdens" [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Sent: Monday, March 13, 2000 7:38 AM
Subject: Re: IDE hardw
Is swapping on Hardware RAID safer than software RAID?
Matthew Clark.
On Sun, Mar 12, 2000 at 02:46:36PM -, Matthew Clark wrote:
Is swapping on Hardware RAID safer than software RAID?
Matthew Clark.
yes, hardware raid should appear as a normal disk to linux
L.
--
Luca Berra -- [EMAIL PROTECTED]
Communication Media Services S.r.l.
To: Gregory Leblanc
Subject: Re: New(?) IDE hardware RAID device
[ Wednesday, February 9, 2000 ] Gregory Leblanc wrote:
A friend of mine just sent this to me
what? nothing was attached that I could tell and no url..
James
At 09:08 AM 2/9/2000 -0800, you wrote:
ok, I feel REALLY dumb now. I guess that's what I get for writing email
after 11:00 PM.
http://www.ami.com/hyperdisk/hyperdisk.html
Tiger direct sells this... they have an internal card that goes between the
on board controller and 2 drives to make them
-Original Message-
From: David Cooley [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, February 09, 2000 11:10 AM
To: Gregory Leblanc
Cc: [EMAIL PROTECTED]
Subject: RE: New(?) IDE hardware RAID device
At 09:08 AM 2/9/2000 -0800, you wrote:
ok, I feel REALLY dumb now. I guess
On Wed, Feb 09, 2000 at 11:26:20AM -0800, Gregory Leblanc wrote:
True, but even with the nifty patches that RedHat has supplied, you can only
boot from RAID 1. I was thinking you could grab two cards like this, and
create RAID-0 arrays on both, and then mirror those using Linux software
RAID
Does anyone know if hardware raid is supported on the IBM Netfinity ?
The Red Hat 6.1 certification page does not mention any Raid options for the
Netfinity which surprises me.
Is it a Perc card or an IBM card? Any known problems?
Thanks in advance,
John Leach
http://www.bosware.com.au
Melbourne
[ Sunday, January 23, 2000 ] John Leach wrote:
Does anyone know if hardware raid is supported on the IBM Netfinity ?
Some Netfinity's come with 2 Adaptec AIC-7895 controllers on
the motherboard. If it's a RAID controller on the M/B then
it's the ServeRAID 3H controller.
The Red Hat 6.1
[ Monday, January 24, 2000 ] Harald Milz wrote:
The driver didn't make it to the mainstream kernel yet.
Actually, it's been in the mainstream kernel for awhile...
drivers/scsi/ips.[ch]
James
--
Miscellaneous Engineer --- IBM Netfinity Performance Development
James Manning wrote:
[ Thursday, January 13, 2000 ] Gregory Leblanc wrote:
Since this list appears to be a good place for general RAID on Linux (or
Linux on RAID?) questions, I thought I'd ask. What do people think of
the StrongARM vs. the i960? Our i960 based cards scream, but we
On 14 Jan 2000, Chris Good wrote:
Much, much better - we've taken all the i960 cards out of our systems
and replaced them with strongarm based ones. Needless to say we shant
be buying any more i960 cards and our supplier is talking about stopping
shipping them as the perform so much
On 14 Jan 2000, Chris Good wrote:
Much, much better - we've taken all the i960 cards out of our systems
and replaced them with strongarm based ones. Needless to say we shant
be buying any more i960 cards and our supplier is talking about stopping
shipping them as the perform so much
In article [EMAIL PROTECTED], James Manning wrote:
Although I haven't digged into results, the only i960 that seems worth
running for a RAID5 is the one (-RN I think?) with the embedded XOR
engine. Otherwise your XOR operations will do much better on the StrongARM
running at typically 2x the
Since this list appears to be a good place for general RAID on Linux (or
Linux on RAID?) questions, I thought I'd ask. What do people think of
the StrongARM vs. the i960? Our i960 based cards scream, but we don't
have any StrongARM yet (although I could probably get some if the
performance is
On Sun, 19 Dec 1999, jeremy smith wrote:
I am new to RAID and I want to use a hardware solution for a very disk
intensive application on my Dual P2. I have found several vendors who carry
Linux drivers for their Ultra2 products: DPT Decade PM1554U2, Mylex
AccelRAID 150/250, ICP Vortex
While this does not help your situation, DPT does provide
a 2.2.5 kernel patch which continues to apply cleanly (and works
great) up to 2.2.13.
I've been using it with a PM3754U2 card with their external
DPT-RS/7UW with five drives in a RAID-5 for ~3 months.
: Hello,
:
: I am new to RAID and
jeremy smith [EMAIL PROTECTED] writes:
DPT Decade PM1554U2, Mylex AccelRAID 150/250, ICP Vortex GDT6518RD,
Syred Cruiser. However, none of the drivers seem to be offered in
the kernel distribution,
Look harder. Use grep.
Mike.
when used with the current linux driver,
I didn't find out how to enable the hardware-RAID.
- Antonio -
check out www.zero-d.com
They make an eide internal uw scsi external raid box that looks pretty
cool.
-sv
PROTECTED] Directory of
Software Engineering,Consensys Computers Inc.
-Original Message-From: Terry
Ewing [EMAIL PROTECTED]To: [EMAIL PROTECTED] [EMAIL PROTECTED]Date:
Wednesday, December 01, 1999 6:18 PMSubject: ide hardware
raid
Hello, I'm an
administrator in a co-location facility
On Wed, Dec 01, 1999 at 04:20:49PM -0800, Alvin Oga wrote:
they have scsi-2 raid cards from adaptec...
1-channel($430) and 3-channel($650) raid controllers..
a dumb question... what are the channels used for ???
scsi channels are different scsi busses, you use them for load
balancing.
Hello,
I'm an administrator in a co-location facility and recently we had a
customer come in to replace a raid card. The only catch was the RAID card
was IDE. This was on an NT box, but I was wondering:
1) what IDE RAID cards are out there now. What is known about them.
2) What is the
hi all "raiders"
just was at the pc store in the duilding I'm in..
they have scsi-2 raid cards from adaptec...
1-channel($430) and 3-channel($650) raid controllers..
a dumb question... what are the channels used for ???
have fun raiding...
alvin
[ Sunday, October 31, 1999 ] Sean Roe wrote:
Okay I am really new at this, so please forgive me:
I just run this command from the command prompt:
mkinitrd --with=dac960?
And then modify the lilo.conf to have the same line?
Ya caught me... I don't use mkinitrd's myself and if RH
Hi,
I just subscribed to this list so I will ask my first question. I have three machines
each with Duel PIII 600s with
Mylex 250 RAID controller driving 5 9Gig SCSI hard drives. My question is I am
installing Red Hat 6.1 and it
found the DAC960 driver and it installed the OS to it, but I
[ Sunday, October 31, 1999 ] Sean Roe wrote:
I just subscribed to this list so I will ask my first question. I have
three machines each with Duel PIII 600s with Mylex 250 RAID controller
driving 5 9Gig SCSI hard drives. My question is I am installing Red
Hat 6.1 and it found the DAC960
Dear Oh Great Raid Masters!!
We're running RAID on two linux boxes. Both use software RAID, and one also
has a hardware RAID (Mylex DAC960/DAC1100). Our kernel is 2.2.11 patched with
raid0145-19990824-2.2.11.
The box that only runs software RAID has no problems at all, whereas the box
Masters!!
-
-We're running RAID on two linux boxes. Both use software RAID, and one also
-has a hardware RAID (Mylex DAC960/DAC1100). Our kernel is 2.2.11 patched with
-raid0145-19990824-2.2.11.
-
-The box that only runs software RAID has no problems at all, whereas the box
-that also has hardware
Matthew Clark wrote:
Is there much info available on setting up Hardware RAID? Most info seems
to be on Software (obvious reasons).. However - as you probably noticed, I'm
having problems with my Hardware RAID and need to sort it ASAP..
I was thinking about moving to kernel 2.2.13
is hardware RAID recovery largely superior to software raid?
i.e. a recovery from a bad disk in a raid1 configuration means an
automatic switch to the good disk and the removal of the bad disk from the
array, until a new disk is re-inserted, and at that time, hardware raid
taking steps to re
Dear raiders,
Does anyone know if the hardware raid on the IBM Netfinity is supported
under Linux?
It doesn't appear (or seem to appear) on the Red Hat Certified machines list
(various Netfinities are supported but raid is not mentioned with them)
TIA
John Leach
John Leach wrote:
Dear raiders,
Does anyone know if the hardware raid on the IBM Netfinity is supported
under Linux?
It doesn't appear (or seem to appear) on the Red Hat Certified machines list
(various Netfinities are supported but raid is not mentioned with them)
TIA
John Leach
SuSE
"John Leach" [EMAIL PROTECTED] writes:
Dear raiders,
Does anyone know if the hardware raid on the IBM Netfinity is supported
under Linux?
It doesn't appear (or seem to appear) on the Red Hat Certified machines list
(various Netfinities are supported but raid is not mentioned with
On Sun, Sep 26, 1999 at 08:38:41PM +1000, John Leach wrote:
Dear raiders,
Does anyone know if the hardware raid on the IBM Netfinity is supported
under Linux?
It doesn't appear (or seem to appear) on the Red Hat Certified machines list
(various Netfinities are supported but raid
On Mon, 26 Jul 1999, James Deptuck wrote:
Does anyone have any experiences with particular hardware raid controlers
that they'd be willing to share?
What's the most reliable controler?
I have experience with the DPT 3334 in several production servers.
It may not be the fastest hardware RAID
Hello, I've got an external hardware RAID connected via SCSI to my Linux box
(Mandrake 6.0). Linux sees it, and lets me partition and format it. The problems
start when I reboot, it complains that something is wrong with the superblock
on /dev/sda (the raid), try e2fsck -b 8193. I do
On Wed, 9 Jun 1999, Russ Hughes wrote:
Hi,
I'm looking for an archive of this list and/or recomendations for scsi
pci hardware raid controller card(s). I am going to be building a cache
and a news server (intel boxes) and want to use raid0 across 4x9gig ultra
wide drives
On Sat, 29 May 1999, Dave Wreski wrote:
I thought somoene might know how the performance of the software raid
support is versus (the typical) hardware raid?
Hmm.. Maybe there's even a generalization that can be made?
Search around a bit. Everything I remember reading is that software
RAID
of the software raid
support is versus (the typical) hardware raid?
Hmm.. Maybe there's even a generalization that can be made?
In general, I think the software RAID functions well. I've had the
chance to use both RAID 0 and RAID 1 implementations. However, I
don't think it's ready for prime time
) hardware raid?
Hmm.. Maybe there's even a generalization that can be made?
Dave
Hi,
On Tue, 25 May 1999, Bobby Hitt wrote:
Hello all:
I'm looking for a Linux HARDWARE RAID solution that supports booting from
the RAID. The hardware I know about that supports this:
DPT
ICP Vortex
And as people have noted, Mylex. I had to recommend one for a
customer
]
Hello all:
I'm looking for a Linux HARDWARE RAID solution that supports booting from
the RAID. The hardware I know about that supports this:
DPT
ICP Vortex
I just returned an DPT 2044UW controller and caching module, performance was
AWFUL. Before I buy a ICP Vortex controller, I wanted
Bobby,
I tried using the DPT Millenium PM3754U2 with 32M (I2O) card it seems to
be fine using RAID5 on 5 IBM U2 HDs using the Linux 2.2.5 kernel.
Z
On Tue, 25 May 1999, Bobby Hitt wrote:
Hello all:
I'm looking for a Linux HARDWARE RAID solution that supports booting from
the RAID
.
Greetings, Dietmar
Bobby Hitt wrote:
Hello all:
I'm looking for a Linux HARDWARE RAID solution that supports booting from
the RAID. The hardware I know about that supports this:
DPT
ICP Vortex
I just returned an DPT 2044UW controller and caching module, performance was
AWFUL. Before I
On Tue, 25 May 1999, Bobby Hitt wrote:
DPT
ICP Vortex
I just returned an DPT 2044UW controller and caching module, performance was
AWFUL. Before I buy a ICP Vortex controller, I wanted to see if anyone knows
about any other alternatives.
There's Mylex. AFAIK, of the three, DPT is at the
Hello all:
I'm looking for a Linux HARDWARE RAID solution that supports booting from
the RAID. The hardware I know about that supports this:
DPT
ICP Vortex
I just returned an DPT 2044UW controller and caching module, performance was
AWFUL. Before I buy a ICP Vortex controller, I wanted to see
Hi
(As I said before) I don't know much about HW-raids on Intel-based (PC)
computers but I think the raid-controller is able to add the new disk to
the existing raid; referring to the raid systems of HP it would start to
"insert" the new space into the existing filesystem (HP ones do so).
If
On Thu, Apr 29, 1999 at 06:44:56PM -0400, XxEDGExX wrote:
We have a raid box from Raid Inc. It has the capability of doing logical
drive expansion. I'm somewhat confused as to how this works in our
particular setup. I figured someone on here could enlighten me.
As far as Linux is
Hm,
as far as I see there is not much data on your home-directory, so that
you could copy the data to another partition, delete /dev/sda5 and set
up a new partition with the new disk included.
The new partition should be /dev/sda5 again after the rebuilt.
I don't know much about the HW-raids,
We have a raid box from Raid Inc. It has the capability of doing logical
drive expansion. I'm somewhat confused as to how this works in our
particular setup. I figured someone on here could enlighten me.
As far as Linux is concerned, it see our raid array as one device. I've
use this device
Andy Poling [EMAIL PROTECTED] writes:
If you'll be doing alot of writing, the controller can use it's memory to
coalesce the writes and optimize the parity calculations for writing.
I believe the Linux buffer-cache will try to do the same.
--
Osma Ahvenlampi
Hi,
I will soon be configuring a new mail server using a DPT RAID-5 hardware
disk RAID solution under RH Linux.
I would like to hear about other sysadmins experiences with this setup..
Any suggestions on an optimum chunk size and tuning the disks?
Any tips getting it all working? Does it
On Sun, 21 Feb 1999, Chris Mauritz wrote:
I'd be curious to know what particular card(s) are best supported for
hardware RAID 5 under Redhat Linux 5.2. I've been using the software
RAID tools provided by mingo, but I think I need something a bit more
"static" that I can use in
| I would be quite interested to have some answers about this matter too.
| (I am interested on RAID-1 too).
if you want to do a form of hardware raid, you might also be interested in a
RAID enclosure instead of a RAID controller. I've been using some from a
company called Zzyzx (http
I'd be curious to know what particular card(s) are best supported for
hardware RAID 5 under Redhat Linux 5.2. I've been using the software
RAID tools provided by mingo, but I think I need something a bit more
"static" that I can use in production.
I saw a note here not long ago abo
ritzI'd be curious to know what particular card(s) are best supported for
ritzhardware RAID 5 under Redhat Linux 5.2. I've been using the software
ritzRAID tools provided by mingo, but I think I need something a bit more
ritz"static" that I can use in production.
ritz
ritzI saw a note here not
I'd be curious to know what particular card(s) are best supported for
hardware RAID 5 under Redhat Linux 5.2. I've been using the software
RAID tools provided by mingo, but I think I need something a bit more
"static" that I can use in production.
I tried a couple of them a
-Original Message-
From: David Schwartz [EMAIL PROTECTED]
To: Adam Snodgrass [EMAIL PROTECTED]; [EMAIL PROTECTED]
[EMAIL PROTECTED]
Cc: [EMAIL PROTECTED] [EMAIL PROTECTED]
Date: Tuesday, 29 December, 1998 17:11
Subject: RE: Hardware RAID
While Adam's comments are certainly correct
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